Table 1 Algorithm of the pretreatment elective imaging workup for colon and rectal cancer [6]
From: Magnetic resonance imaging and endorectal ultrasound for diagnosis of rectal lesions
Colon cancer | Â | Rectal cancer |
|---|---|---|
Biopsy during colonoscopy | Diagnosis | Biopsy and full colonoscopy |
Abdominal CT or CT colonography | Location | MR |
Abdominal CT | T-stage | MRI (stage T1-T4, including evaluation of the mesorectal fascia), EURS (stage T1) |
Abdominal CT | N-stage | MR |
Abdominal CT or liver MR chest CT or chest X-ray | M-stage | Abdominal CT or liver MR chest CT or chest X-ray |